# Fixture Options

The `options` export in a fixture module is passed as a [Decorator](./decorators.mdx) prop, allowing you to make decorators dynamic and more powerful.

Here's an example of using a `viewport` fixture option that is applied globally using the [Viewport](./viewport.mdx) decorator:

```jsx filename="Hello.fixture.jsx"
export const options = {
  viewport: { width: 375, height: 667 },
};

export default <Hello greeting="Hi" name="Maggie" />;
```

```jsx filename="cosmos.decorator.jsx"
function ViewportDecorator({ children, options }) {
  if (options.viewport)
    return <Viewport {...options.viewport}>{children}</Viewport>;

  return children;
}

export default [ViewportDecorator];
```

Other use cases for fixture options include setting the theme, global state, and anything else that can be mocked inside a decorator.
